We have some older devices that only support 18.06.9 & we cannot connect via ssh-rsa keys to them from modern linux clients like Fedora 36 or Ubuntu 22.04. We get:
send_pubkey_test: no mutual signature algorithm
even if we use
I made a test from an Ubuntu 20.04 container & it worked with the same rsa key, so I'm presuming that's in an issue with outdated/incompatible openssh protocols. Is there anyway to get around this problem - our Ubuntu 22.04 Checkmk server needs to connect to these clients via ssh.
It would actually be preferable if there a way to add ed25519 to 18.06 - we connect to our 22.03 routers with ed25519 - I just tried with an rsa key because the ed25519 wouldn't work.